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  <title>$永远的24k纯帅$</title>
  <script>

    //自定义构造函数创建对象,我要自己定义一个构造函数,自定义构造函数,创建对象
    //函数和构造函数的区别；名字是不是大写(首字母是大写)
    function Person(name,age) {
      this.name=name;
      this.age=age;
      this.sayHi=function () {
        console.log("我叫:"+this.name+",年龄是:"+this.age);
      };
    }

    //自定义构造函数创建对象:先自定义一个构造函数,创建对象
    var obj=new Person("小明",10);
    console.log(obj.name);
    console.log(obj.age);
    obj.sayHi();

    var obj2=new Person("小红",20);
    console.log(obj2.name);
    console.log(obj2.age);
    obj2.sayHi();


    console.log(obj instanceof Person);
    console.log(obj2 instanceof  Person);


    //自定义狗的构造函数,创建对象
    function Dog(name,age,sex) {
      this.name=name;
      this.age=age;
      this.sex=sex;
    }
    var dog=new Dog("大黄",20,"男");
    console.log(dog instanceof Person);//false
    console.log(dog instanceof Dog);






  </script>
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